Chapter 19

S00–T88: Injury, Poisoning and Certain Other Consequences of External Causes

Injury, Poisoning and Certain Other Consequences of External Causes diagnostic classification updated for 2026.

Chapter Instructions

Excludes2(Not included here. Code separately if applicable.)

birth trauma (P10-P15)
obstetric trauma (O70-O71)

Use Additional Code

code to identify any retained foreign body, if applicable (Z18.-)

All Codes Billable Only

Internal Codes

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T56.893D|
Toxic effect of other metals, assault, subsequent encounter
T56.893S|
Toxic effect of other metals, assault, sequela
T56.894|
Toxic effect of other metals, undetermined
T56.894A|
Toxic effect of other metals, undetermined, initial encounter
T56.894D|
Toxic effect of other metals, undetermined, subsequent encounter
T56.894S|
Toxic effect of other metals, undetermined, sequela
T56.9|
Toxic effects of unspecified metal
T56.91|
Toxic effect of unspecified metal, accidental (unintentional)
T56.91XA|
Toxic effect of unspecified metal, accidental (unintentional), initial encounter
T56.91XD|
Toxic effect of unspecified metal, accidental (unintentional), subsequent encounter
T56.91XS|
Toxic effect of unspecified metal, accidental (unintentional), sequela
T56.92|
Toxic effect of unspecified metal, intentional self-harm
T56.92XA|
Toxic effect of unspecified metal, intentional self-harm, initial encounter
T56.92XD|
Toxic effect of unspecified metal, intentional self-harm, subsequent encounter
T56.92XS|
Toxic effect of unspecified metal, intentional self-harm, sequela
T56.93|
Toxic effect of unspecified metal, assault
T56.93XA|
Toxic effect of unspecified metal, assault, initial encounter
T56.93XD|
Toxic effect of unspecified metal, assault, subsequent encounter
T56.93XS|
Toxic effect of unspecified metal, assault, sequela
T56.94|
Toxic effect of unspecified metal, undetermined
T56.94XA|
Toxic effect of unspecified metal, undetermined, initial encounter
T56.94XD|
Toxic effect of unspecified metal, undetermined, subsequent encounter
T56.94XS|
Toxic effect of unspecified metal, undetermined, sequela
T57|
Toxic effect of other inorganic substances
T57.0|
Toxic effect of arsenic and its compounds
T57.0X|
Toxic effect of arsenic and its compounds
T57.0X1|
Toxic effect of arsenic and its compounds, accidental (unintentional)
T57.0X1A|
Toxic effect of arsenic and its compounds, accidental (unintentional), initial encounter
T57.0X1D|
Toxic effect of arsenic and its compounds, accidental (unintentional), subsequent encounter
T57.0X1S|
Toxic effect of arsenic and its compounds, accidental (unintentional), sequela
T57.0X2|
Toxic effect of arsenic and its compounds, intentional self-harm
T57.0X2A|
Toxic effect of arsenic and its compounds, intentional self-harm, initial encounter
T57.0X2D|
Toxic effect of arsenic and its compounds, intentional self-harm, subsequent encounter
T57.0X2S|
Toxic effect of arsenic and its compounds, intentional self-harm, sequela
T57.0X3|
Toxic effect of arsenic and its compounds, assault
T57.0X3A|
Toxic effect of arsenic and its compounds, assault, initial encounter
T57.0X3D|
Toxic effect of arsenic and its compounds, assault, subsequent encounter
T57.0X3S|
Toxic effect of arsenic and its compounds, assault, sequela
T57.0X4|
Toxic effect of arsenic and its compounds, undetermined
T57.0X4A|
Toxic effect of arsenic and its compounds, undetermined, initial encounter
T57.0X4D|
Toxic effect of arsenic and its compounds, undetermined, subsequent encounter
T57.0X4S|
Toxic effect of arsenic and its compounds, undetermined, sequela
T57.1|
Toxic effect of phosphorus and its compounds
T57.1X|
Toxic effect of phosphorus and its compounds
T57.1X1|
Toxic effect of phosphorus and its compounds, accidental (unintentional)
T57.1X1A|
Toxic effect of phosphorus and its compounds, accidental (unintentional), initial encounter
T57.1X1D|
Toxic effect of phosphorus and its compounds, accidental (unintentional), subsequent encounter
T57.1X1S|
Toxic effect of phosphorus and its compounds, accidental (unintentional), sequela
T57.1X2|
Toxic effect of phosphorus and its compounds, intentional self-harm
T57.1X2A|
Toxic effect of phosphorus and its compounds, intentional self-harm, initial encounter

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